/*
* Copyright (c) 2006-2007 Erin Catto http:
*
* This software is provided 'as-is', without any express or implied
* warranty.  In no event will the authors be held liable for any damages
* arising from the use of this software.
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked, and must not be
* misrepresented the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
// var b2CircleShape = Class.create();
// Object.extend(b2CircleShape.prototype, b2Shape.prototype);
// Object.extend(b2CircleShape.prototype, 
import b2Shape from './b2Shape';
import b2Vec2 from './../../common/math/b2Vec2';
import b2Math from './../../common/math/b2Math';
import b2Mat22 from './../../common/math/b2Mat22';
import b2Pair from './../../collision/b2Pair';
import b2AABB from './../b2AABB';
export default class b2CircleShape extends b2Shape {
    //--------------- Internals Below -------------------
    constructor(def, body, localCenter) {
        super(def, body);
        // Local position in parent body
        this.m_localPosition = new b2Vec2();
        this.m_radius = 0;
        // initialize instance variables for references
        this.m_R = new b2Mat22();
        this.m_position = new b2Vec2();
        //
        // The constructor for b2Shape
        this.m_userData = def.userData;
        this.m_friction = def.friction;
        this.m_restitution = def.restitution;
        this.m_body = body;
        this.m_proxyId = b2Pair.b2_nullProxy;
        this.m_maxRadius = 0.0;
        this.m_categoryBits = def.categoryBits;
        this.m_maskBits = def.maskBits;
        this.m_groupIndex = def.groupIndex;
        //
        // initialize instance variables for references
        this.m_localPosition = new b2Vec2();
        //
        //super(def, body);
        //b2Settings.b2Assert(def.type == b2Shape.e_circleShape);
        var circle = def;
        //this.m_localPosition = def.localPosition - localCenter;
        this.m_localPosition.Set(def.localPosition.x - localCenter.x, def.localPosition.y - localCenter.y);
        this.m_type = b2Shape.e_circleShape;
        this.m_radius = circle.radius;
        this.m_R.SetM(this.m_body.m_R);
        //b2Vec2 r = b2Mul(this.m_body->this.m_R, this.m_localPosition);
        var rX = this.m_R.col1.x * this.m_localPosition.x + this.m_R.col2.x * this.m_localPosition.y;
        var rY = this.m_R.col1.y * this.m_localPosition.x + this.m_R.col2.y * this.m_localPosition.y;
        //this.m_position = this.m_body->this.m_position + r;
        this.m_position.x = this.m_body.m_position.x + rX;
        this.m_position.y = this.m_body.m_position.y + rY;
        //this.m_maxRadius = r.Length() + this.m_radius;
        this.m_maxRadius = Math.sqrt(rX * rX + rY * rY) + this.m_radius;
        var aabb = new b2AABB();
        aabb.minVertex.Set(this.m_position.x - this.m_radius, this.m_position.y - this.m_radius);
        aabb.maxVertex.Set(this.m_position.x + this.m_radius, this.m_position.y + this.m_radius);
        var broadPhase = this.m_body.m_world.m_broadPhase;
        if (broadPhase.InRange(aabb)) {
            this.m_proxyId = broadPhase.CreateProxy(aabb, this);
        }
        else {
            this.m_proxyId = b2Pair.b2_nullProxy;
        }
        if (this.m_proxyId == b2Pair.b2_nullProxy) {
            this.m_body.Freeze();
        }
    }
    static Create(def, body, center) {
        return new b2CircleShape(def, body, center);
    }
    TestPoint(p) {
        //var d = b2Math.SubtractVV(p, this.m_position);
        var d = new b2Vec2();
        d.SetV(p);
        d.Subtract(this.m_position);
        return b2Math.b2Dot(d, d) <= this.m_radius * this.m_radius;
    }
    Synchronize(position1, R1, position2, R2) {
        this.m_R.SetM(R2);
        //this.m_position = position2 + b2Mul(R2, this.m_localPosition);
        this.m_position.x = (R2.col1.x * this.m_localPosition.x + R2.col2.x * this.m_localPosition.y) + position2.x;
        this.m_position.y = (R2.col1.y * this.m_localPosition.x + R2.col2.y * this.m_localPosition.y) + position2.y;
        if (this.m_proxyId == b2Pair.b2_nullProxy) {
            return;
        }
        // Compute an AABB that covers the swept shape (may miss some rotation effect).
        //b2Vec2 p1 = position1 + b2Mul(R1, this.m_localPosition);
        var p1X = position1.x + (R1.col1.x * this.m_localPosition.x + R1.col2.x * this.m_localPosition.y);
        var p1Y = position1.y + (R1.col1.y * this.m_localPosition.x + R1.col2.y * this.m_localPosition.y);
        //b2Vec2 lower = b2Min(p1, this.m_position);
        var lowerX = Math.min(p1X, this.m_position.x);
        var lowerY = Math.min(p1Y, this.m_position.y);
        //b2Vec2 upper = b2Max(p1, this.m_position);
        var upperX = Math.max(p1X, this.m_position.x);
        var upperY = Math.max(p1Y, this.m_position.y);
        var aabb = new b2AABB();
        aabb.minVertex.Set(lowerX - this.m_radius, lowerY - this.m_radius);
        aabb.maxVertex.Set(upperX + this.m_radius, upperY + this.m_radius);
        var broadPhase = this.m_body.m_world.m_broadPhase;
        if (broadPhase.InRange(aabb)) {
            broadPhase.MoveProxy(this.m_proxyId, aabb);
        }
        else {
            this.m_body.Freeze();
        }
    }
    QuickSync(position, R) {
        this.m_R.SetM(R);
        //this.m_position = position + b2Mul(R, this.m_localPosition);
        this.m_position.x = (R.col1.x * this.m_localPosition.x + R.col2.x * this.m_localPosition.y) + position.x;
        this.m_position.y = (R.col1.y * this.m_localPosition.x + R.col2.y * this.m_localPosition.y) + position.y;
    }
    ResetProxy(broadPhase) {
        if (this.m_proxyId == b2Pair.b2_nullProxy) {
            return;
        }
        var proxy = broadPhase.GetProxy(this.m_proxyId);
        broadPhase.DestroyProxy(this.m_proxyId);
        proxy = null;
        var aabb = new b2AABB();
        aabb.minVertex.Set(this.m_position.x - this.m_radius, this.m_position.y - this.m_radius);
        aabb.maxVertex.Set(this.m_position.x + this.m_radius, this.m_position.y + this.m_radius);
        if (broadPhase.InRange(aabb)) {
            this.m_proxyId = broadPhase.CreateProxy(aabb, this);
        }
        else {
            this.m_proxyId = b2Pair.b2_nullProxy;
        }
        if (this.m_proxyId == b2Pair.b2_nullProxy) {
            this.m_body.Freeze();
        }
    }
    Support(dX, dY, out) {
        //b2Vec2 u = d;
        //u.Normalize();
        var len = Math.sqrt(dX * dX + dY * dY);
        dX /= len;
        dY /= len;
        //return this.m_position + this.m_radius * u;
        out.Set(this.m_position.x + this.m_radius * dX, this.m_position.y + this.m_radius * dY);
    }
}
b2Shape.Register(b2CircleShape.e_circleShape, b2CircleShape.Create);
